Apparatus for filtering air



Patented July 12, 1887.

J. G. CHRISTOPHER.

APPARATUS FOR FILTERING AIR.

' said air.

UNITED STATES PATENT OFFICE.

JAMES C. CHRISTOPHER, OF BALTIMORE, MARYLAND.

APPARATUS FOR FILTERING AIR.

SPECIFICATION forming part of Letters Patent No. 366,568, dated July 12,1887.

Application filed September 18, 1886. Serial No. 213,858. (No model.)

To all whom it may concern:

Be it known that I, Janus O. CHRISTOPHER, of the city of Baltimore andState of Maryland, have invented certain Improvements in Apparatus forFiltering and Disinfccting Air Passing to Hot-Air Furnaces, of which thefollowing is a specification.

This invention relates to the combination, with the air-induction pipeof a hot-air furnace, of an improved apparatus to intercept the dust anddestroy the germs of disease contained in the said air, as willhereinafter fully appear.

In the drawings forming a part hereof, Fig

1 ure I is a vertical section of the apparatus,

together with a portion of the front wall of a building and the wind0wframe through which the air is taken. Fig. II is a section taken throughthe dotted line a: m, Fig. I. Fig. III is a section taken through thedotted line y 3 Fig. I.

Similar letters of reference indicate similar parts in all the views.

In the said drawings, A is the front wall of the building, and B thewindow, through which the outer end of the air-induction O pipeprojects.

The furnace is not shown, as it embodies no part of the presentinvention.

Withiu a box, D, in the pipe 0 are situated a series offiltering-partitions, E, which in the present case are three in number,and these partitions are formed of pieces of wiregauze or wirework, a,of suitable mesh, and a confined body of wool or other substance, I),which will allow the passage through it of air moving in the directionof the furnace, while it effectually intercepts all dust contained inthe One or more of the said partitions are saturated with somedisinfecting solution, such as carbolic acid. In the present case Isaturate only one of the partitions, and this is the central one of theseries, the others serving merely to intercept dust passing to thefurnace. To effect this saturation of the wool in the partition, Isecure above the box D a receptacle, F, of any suitable size and shape,which is provided with a lid, 0, preferably hinged to the said box. Thisbox is supplied with disinfecting-liquid to a proper height, and thecontained liquid is conducted to the wool in the central partition bymeans of a wick, d, which passes through a suitable tube, 0, in the topof the box D. The partitions E are removable, and to this end they areplaced between strips f, soldered or otherwise secured to theinterior-of the box D. A door, G, on one side of the box D may be openedto give access to the partitions for their removal and replacement, anda similar door on the top of the liquid-receptacle F gives access to thedisinfectant.

I do not limit myself to any peculiar con struction of the box D and thedisinfectingliquid receptacle F, or to the arrangement of thepartitions, as various alterations could be made without changing thecharacter of the invention. Further, I do not confine myself to theemployment of wool as the material which is inclosed between thewirework parts of the partitions or to the use of wirework, as perforatetinplate could be used, but not with satisfactory results.

I am aware that it is not new to filter air passing to a receptacle forfood by means of sheets of fibrous material saturated with water, andthis I do not claim; but

\Vhat I do claim is- In combination with the air-induction pipe, a boxsituated in the said pipe, a series of partitions in the said box formedof wirework and a body of wool, a receptacle for disinfecting-liquid,and awick to form the means of communication between the said receptaclefor liquid and one or more of the said partitions, substantially asspecified.

J AMES 0. CHRISTOPHER.

\Vituesses:

J. H. SIRIET, DANL. FISHER.

